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Add experimental loop detection to the routing system.

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This commit is contained in:
David Reid
2021-01-06 19:06:39 +10:00
parent c540366921
commit 4f96309cbf
3 changed files with 166 additions and 86 deletions
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research/miniaudio_routing.c
+35
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@@ -5,6 +5,7 @@
ma_node_graph g_nodeGraph;
ma_data_source_node g_dataSourceNode;
ma_splitter_node g_splitterNode;
ma_splitter_node g_loopNode; /* For testing loop detection. We're going to route one of these endpoints back to g_splitterNode to form a loop. */
void data_callback(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
@@ -89,18 +90,41 @@ int main(int argc, char** argv)
}
/*
Splitter node. Note that we've already attached the data source node to another, so this section
will test that changing of attachments works as expected.
*/
splitterNodeConfig = ma_splitter_node_config_init(device.playback.channels);
/* Loop detection testing. */
result = ma_splitter_node_init(&g_nodeGraph, &splitterNodeConfig, NULL, &g_loopNode);
if (result != MA_SUCCESS) {
printf("Failed to initialize loop node.");
return -1;
}
/* Connect both outputs of the splitter to the endpoint for now. Later on we'll test effects and whatnot. */
ma_node_attach_to_output_node(&g_loopNode, 0, ma_node_graph_get_endpoint(&g_nodeGraph), 0);
ma_node_attach_to_output_node(&g_loopNode, 1, ma_node_graph_get_endpoint(&g_nodeGraph), 0);
/* Adjust the volume of the splitter node's endpoints. We'll just do it 50/50 so that both of them combine to reproduce the original signal at the endpoint. */
ma_node_set_output_bus_volume(&g_loopNode, 0, 0.5f);
ma_node_set_output_bus_volume(&g_loopNode, 1, 0.5f);
result = ma_splitter_node_init(&g_nodeGraph, &splitterNodeConfig, NULL, &g_splitterNode);
if (result != MA_SUCCESS) {
printf("Failed to initialize splitter node.");
return -1;
}
#if 0
/* Connect both outputs of the splitter to the endpoint for now. Later on we'll test effects and whatnot. */
ma_node_attach_to_output_node(&g_splitterNode, 0, ma_node_graph_get_endpoint(&g_nodeGraph), 0);
ma_node_attach_to_output_node(&g_splitterNode, 1, ma_node_graph_get_endpoint(&g_nodeGraph), 0);
@@ -108,11 +132,22 @@ int main(int argc, char** argv)
/* Adjust the volume of the splitter node's endpoints. We'll just do it 50/50 so that both of them combine to reproduce the original signal at the endpoint. */
ma_node_set_output_bus_volume(&g_splitterNode, 0, 0.5f);
ma_node_set_output_bus_volume(&g_splitterNode, 1, 0.5f);
#else
/* Connect both outputs of the splitter to the endpoint for now. Later on we'll test effects and whatnot. */
ma_node_attach_to_output_node(&g_splitterNode, 0, &g_loopNode, 0);
ma_node_attach_to_output_node(&g_splitterNode, 1, &g_loopNode, 1);
/* Now loop back to the splitter node to form a loop. */
ma_node_attach_to_output_node(&g_loopNode, 1, &g_splitterNode, 0);
#endif
/* The data source needs to have it's connection changed from the endpoint to the splitter. */
ma_node_attach_to_output_node(&g_dataSourceNode, 0, &g_splitterNode, 0);
/* Stop the splitter node for testing. */
/*ma_node_set_state(&g_splitterNode, ma_node_state_stopped);*/